This is a 376 grt/541 dwt Swedish ship built in 1948 by the Solvesborgs Varv. The LR/IMO number is 5302233 and the funnel marking with a 'T' on red and black bands on a yellow funnel is that of Broström Tender Service, Gothenburg - info courtesy Bob Scott

Hi Chris
Well, its not the Danish Gamma, which traded Australia and NZ. Not sure which Gamma it actually is, but my guess is that it is a Swedish Gamma from late 1960'ies. Guessed from the flag. She left Europe for the charter in 1969 and was renamed Mary Clare and kept that name until 1977, when she returned to Europe and shortly after sold off to Faroese Islands.